This is a 3D-printed adapter for mounting a Fujinon EX 50mm F2.8 lens on a Leica L39 camera. It supports rangefinder coupling, allowing for focusing using the split-image method. This product is manufactured using a 3D printer. Therefore, there may be some layer lines or roughness on the surface. Production may begin after an order is placed, and it may take some time to ship. Thank you for your understanding. The camera and lens shown in the photos are not included in the product. Please be careful not to use excessive force during assembly (risk of damage). Due to being a 3D-printed product, there may be individual variations and slight adjustments may be necessary.